1937 No. 237, 3c Cornation stamp, posted by an Ottawa Cornation flag cancel dated MAY 10. Ottawa Philatelic Society cachet in red. Pencil addressed to Ottawa. The cover has been placed on a black background, to better show the edges. Pay only .50c postage for each additiional item purchased. Purchases of more than $100 must be sent by registered mail. Please wait for an invoice. Checkout my Ebay store for more exciting stamps and covers.